255915 divided by 86 
We're looking to find how many times 86 goes into 255915.

Going ahead to step 1:
If we divide 2 by 86, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 86

Going ahead to step 2:
86 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Fetch the next digit (5) from the dividend, attach it to 25 and continue: 255 / 86

On to step 3:
When dividing 255 by 86, we get 2 with a remainder of 83.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 172 from 255 leaves us with 83.
Bring next digit (9) of the dividend behind the 83 and repeat the process: 839 / 86

Moving on to step 4:
86 can be fit into 839 9 times, resulting in a remainder of 65.
Use 9 as the next digit of our solution. 
Result so far: 29.0
Deduct 774 from 839 and we're left with 65.
Include the next digit (1) from the dividend after 65, then repeat: 651 / 86

On to step 5:
86 can be fit into 651 7 times, resulting in a remainder of 49.
The next digit of our result is 7. 
Result so far: 297.0
The remainder is 49 after subtracting 602 from 651.
Take the next digit (5) from the dividend and append it to 49, then repeat: 495 / 86

On to step 6:
86 can be fit into 495 5 times, resulting in a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 2975.0
Deduct 430 from 495 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 7:
When dividing 650 by 86, we get 7 with a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 2975.7
If we subtract 602 from 650, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 8:
When dividing 480 by 86, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 2975.75
The remainder is 50 after subtracting 430 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
The number 86 fits into 500 5 times, leaving a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 2975.755
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final outcome is 2975.755, with a leftover of 0.007.